1231303020103 has 12 divisors (see below), whose sum is σ = 1333876378680. Its totient is φ = 1136099860896.

The previous prime is 1231303020049. The next prime is 1231303020121. The reversal of 1231303020103 is 3010203031321.

It is not a de Polignac number, because 1231303020103 - 2⁹ = 1231303019591 is a prime.

It is a super-2 number, since 2×1231303020103² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231303020133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1167193 + ... + 1955746.

It is an arithmetic number, because the mean of its divisors is an integer number (111156364890).

Almost surely, 2^{1231303020103} is an apocalyptic number.

1231303020103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1231303020103 is a deficient number, since it is larger than the sum of its proper divisors (102573358577).

1231303020103 is a wasteful number, since it uses less digits than its factorization.

1231303020103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125298 (or 3125285 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1231303020103 its reverse (3010203031321), we get a palindrome (4241506051424).

The spelling of 1231303020103 in words is "one trillion, two hundred thirty-one billion, three hundred three million, twenty thousand, one hundred three".